Ptters



G. STACKPOLE. Method 'of AttachingNeedles to Sewing Machines.

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GREENLEAF STACKPOLE, OF NEW YORK, N. Y., ASSIGNOR TO STACKPOLE SEWING-MACHINE COMPANY, OFBOSTON, MASSACHUSETTS.

Letters Patent No. 91,684, dated June 22, 1869; a-ntedated Jame 19,1869..

HEPROVEMENT IN METHOD OI ATTACHING- NEEDLES m SEWING-MACHINESZ TheSchedule referred. to in these Letters Patent and making part of thesame.

To all whom it may concern Be it known that I, GREENLEAF STACKPOLE, ofNew York city, in the county and State of New York, have invented a newand useful Improvement in the Method of Attaching Needles toSewing-Machines; and I do hereby declare that the following is a fulland exact description thereof, reference being had to the accompanyingdrawings, and to the letters of reference marked thereon.

The nature of my invention consists in so attaching a needle to theneedle-bar of a sewing-machine, that it may be turned point upwardswithout detaching it from the needle-bar.

The object of my invention, in thus attaching the needle tosewing-machines, is to facilitate the threading, as it can be performedwith much less trouble when the point of the needle is turned, so thatthe eye of the needle can be more easily seen. Also, said arrangementfor tripping the needle is indispensable in a. machine where two seamsare sewed at the same time. As it sometimes occurs that 'one thread isbroken whilst sewing, and the machine takes several stitches with theworking-needle, it is then necessary to turn the working-needle out ofthe work, and to go back with the needle in which the thread has beenbroken, and bring its line of stitches up even with the other, so as tocarry both lines of stitches along perfectly. I

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation.

I make my needle-bar in the usual manner, except thatI drill a holeabout three-sixteenths of an inch in diameter, crosswise, through itslower end. Through this hole I press the small end -of the piece whichholds the needle, and is shown by Figure 3. Through this piece is ahole, snfficiently large for the largestshanked needle. A screw-threadis cut on the larger portion of the piece B, and between the hole forthe needle and the shoulder which presses against the needle-bar. Aneight-square nut, E, is screwed on,

and when the needle is put in its place, the nut E is turned until itpresses against the side of the needle, to hold it in position. Theopposite end of the piece which holds the needle is provided with ascrewthread, upon which a thumb-nut is screwed: Said nut is reamed outsufliciently to leave a space for a spiral spring, F, that surrounds thesmaller part of the pin B, and on which the nut H is screwed. One end ofsaid spring presses on the inner head of the nut, while the other ispressed against the-needlebar, and this spring allows the pin B to playin the direction of its length, when required. A bisected view of thethumb-nut, with the spiral spring in itsplace, is shown by Figure 5. Asteady-pin, on the side of the needle-bar, enters a hole in the innershoulder. of the piece which holds the needle, and holds it in position.

If it is desired to turn the needle up, the thumb and finger should bepressed against the thumb-nut, pressing it towards the needle-bar, untilthe shoulder of the piece which holds the needle is pressed off of thesteady-pin. It is then easily turned up at any angle required. Otherholes may be made in the shoulder, to receive the steady-pin, and holdit in that position.

Figure 1 is a view of a needle-bar, with my device applied, and with aneedle in position for work.

Figure 2 is a needle-bar, with my device applied, with a needle turnedout of work.

What I claim as new,.and wish to secure by Letters Patent, is-

The within-described mode of securing the needle N to the needle-bar A,by means of pin B, nuts E H, and spring F, all as described, and so thatthe needle can be thrown out of work without detaching it from theneedle-bar, for the purposes above set forth.

G. STACKPOLE.

Witnesses:

GEO. C. LAMBRIGHT, J. H. PHILLIPS. V

